如何将选项传递给“集合”字段 Symfony 2.1 中的 CustomType？

I have SuperType实体表格Super.

在这种形式中我有一个collection现场ChildType实体的表单类型Child

class SuperType:

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder->add('childrens', 'collection', array(
            'type' => new ChildType(null, array('my_custom_option' => true)),  
}

class ChildType:

public function buildForm(FormBuilderInterface $builder, array $options)
{
    if ($options['my_custom_option']) {
        $builder->add('my_custom_field', 'textarea'));
    }
}

public function setDefaultOptions(OptionsResolverInterface $resolver)
{
  $resolver->setDefaults(array(
      ...
      'my_custom_option' => false
  ));
}

我怎样才能改变my_custom_option仅此价值SuperType form?

当然，我尝试通过构造函数传递此选项的方法不起作用。

您可以通过选项数组 http://symfony.com/doc/current/reference/forms/types/collection.html#entry-options给您的孩子输入如下：

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder->add('childrens', 'collection', array(
            'entry_type' => new ChildType(),  
            'entry_options'  => array(
                'my_custom_option' => true,
            ),
    // ...

}